Strip-serving device



Feb. 18, 1930. A. c. HUMMEL STRIP SERVING DEVICE Filed Feb. 13. 1926 2Sheets-Sheet I NVENTOR.

A TTORNE Y3 Feb. 18, 1930. A. c. HUMMEL STRIP SERVING DEVICE Filed Feb.13. 1926 2 Sheets-Sheet 2% IX! 'ENTOR.

A TTORNEYS mounting rod.

Patented Feb. 18, 1930 UNITED \STATES AUGUST C. HUMMEL,

OF CINCINNATI, OHIO STRIP-SERVING- DEVICE Application filed February My.invention relates to strip serving devlces "and particularly toimprovements in the strip supply mounting means, in the strip cuttingmeans, and in the strip moistening means. 4

In the art the use of strip serving devices having a core mounting for aroll of tape, and having rollers over which the tape passes to a cut-offknife is old. Further in my cpending application Serial Number 75.269,-'filed December 14, 1925, 1 have disclosed the use of an invertedbristle brush disposed in a liquid reservoir with which the adhesiveface of the tape is moistened. The mechanical prlnciple of operation ofmy strip serving device is broadly old. I

It is my object to provide an improved roll core mounting which willfrictionally retard the dispensing of the tape and at the same time keepthe tape in aligned position on the dispensing roller. It is further myobject to provide a frictionally retained plate bearing against thebristles of the moistening brush, which is readily accessible foradjustment. It is a still further object of my invention to provide areadily demountable knife, which makes the sharpening of the knife muchmore simple than has heretofore been possible in tane dispensingmachines.

Referring to the drawings in which I have illustrated a preferredembodiment of a tape dispensing machine, in which my improvements areincorporated:

Figure 1 is a longitudinal sectional view of the tape dispensingmachine.

Figure 2 is a front elevation with the liquid reservoir removed.

Figure 3 is a perspective view of a portion of the side of the casingshowing the means for supporting the cut-off knife.

Figure 4 is a side elevation of the core Figure5 is a front elevation ofthe tape roll tension plate.

Figure 6 is a section of the tension plate shown in Figure 5, taken onthe lines 6, 6.

Figure 7 is a front elevation of the retaining plate which is mounted onthe opposite side of the tape roll from the tension plate. 1

13, 1926. Serial No. 88.128.

Figure 8 is a ofi' knife. I a

Figure 9 is a plan view of the brush moisture regulating plate.

Figure 10 is a section of the brush plate taken along the lines 10-10 inFigure 9.

Figure 11 is a front elevation of a portion of a separating plate whichmay be used on the device when more than one roll of tape is mounted onthe core mounting ro'd.

Generally indicated at 1 is the frame of the machine, which hasbifurcated standards 2'which extend upwardly on each side of the spacein which the roll of tape is to be mounted. The roll of tape indicatedat 3 is wound about a core 4 through which a rod 5 is inserted so thatthe roll may be rotatably mounted on the standards. In the illustrationI have shown open topped slots 6 in the standards in which each end ofthe rod may seat. The method ofsupporting and journaling the ends of thecore rod, however, forms no part of my invention, it being old to mountthe ends of core rods in slotted bosses and other mechanicallyequivalent ways. The strip which is being dispensed passes, with itsadhesive side toward the roll, under the roller 7 extending laterallyacross the frame and over the roller 8, which is also extended laterallyacross the'frame. The strip then passes between the moisture regulatingplate 9 and the cut-off knife 10. By pulling the tape outwardly in thedirection of the arrow 11 the tape may conveniently be torn off in theusual manner. The moisture is supplied to the adhesive side of the tapefrom the bristles of a brush 12 which is disposed -in a liquid reservoir13 having lugs 14 which mount the reservoir in the end of the casing.

perspective view of the cut- The improvements to which my inventionrelates are first to theprovision 10f a novel tension plate 15 which maybe made from a metal stamping. The tension plate has a slot 16 extendingupwardly from the base which allows the plate to slip over the core rod5. A spring tongue 17 is extended out from the surface of the plate asindicated in Figure 6 the top end of the slot 16 being disposed in thatportion of the spring tongue which is furthermost from the plate. Thespring clip has an upper-end 18 which moves upwardly and-downwardly overthe face of the plate a nd'in accordance with the distance it is com-;Ipresse'd upwardly provides resilience forthe "plate which causes theinner face indicated at 19 to bear against the entire side of the rollof-tape. The opposite side of the roll of tape is held by a stationaryretaining plate 20,

which bears against the entire side of the roll and which is providedwith a slot 21 having a narrowed upper end 22 which is adapted to seatin notches 23 in thecore rod 5. Thus, if a wide roll of tape is takenout of the device and a narrower roll inserted, the only adjustmentnecessary is the removal-of the retaining plate and the insertion of theplate with the narrow upper portion 22 of the slot in a different set ofnotches 23 in the core rod 5. Further while I have shown one roll oftape mounted in the device, by the use of a separating plate, a portionof which is indicated at 24, two or more rolls of tape may be mounted.The plate 24 is preferably of similar size and shape as the plate'excepting that merely for separatingtwo rolls of tape I do not findthat fit is necessary to have the slot 25 in the separating platenarrowed at its upper end.

' The tape is cut off as it is served between the cut-off knife and themoisture regulating plate. The cut-0E knife 10 toward the improvement ofwhich another of my objects is directed, has a fiat upper portion at oneside of which the serrated edge 26 is disposed. The main part of theupper portion is spaced above the side edges 27 which bear downwardlyagainst the moisture regulating plate 9, which is of bowed contoursothat when the cut-off knife is moved downwardly the plate 9 isresiliently held against the upper edge of the casing of the device bythe side edge 27. Between the side edges, the tape is free to passtoward dispensing position. The knife has downturned sides 28 with slots29 which are adapted to spring into engagement with lugs 30 which areextended out from the outer side of the casing. By pulling outwardly onthe downturned sides of the knife, it may easily be removed and thecutting edge may be sharpened with a file, or the moisture regulatingplate 9, which bears against the bristles of the brush, may be movedinto any desired bearing position. 'The successful operation of a stripserving device depends on three conditions, the correct alignment andtension of the tape as dispensed, the cutting off of the tape with asharp knife, and the correct regulation of moisture on the brush. Myimprovements in structure which provide for a novel means of aligningand frictionally retarding the dispensing of the tape, and my novelknife and moisture regulating plate mounting are contributions to theart of no small importance. WVhile I have disclosed only one preferredtype of construction. it

1. In a strip serving and moistening device in combination with lugs onwalls of a. casing, a cut-off knife having downturned side portions adated to engage sa1d lugs, a

liquid reservoir eta'chably secured in said casing, an inverted brushextending from within said reservoir, a plate adapted to bearagainstbristles of said brush for regulating the capillary distributionof liqu d therefrom, said plate having a spring-like structure, and saidplate adjustably retained by said cutoff knife.

2. In combination in a strip serving device, a casing, a liquidreservoir, an inverted brush disposed in said reservoir, means ofregulating thecapillary distribution of liquid from bristles of saidinverted brush, and a cut-oft knife provided with means for securingsaid regulating means in adjusted position.

3. In combination in a strip serving device, a casing, a liquidreservoir, an inverted brush disposed in said reservoir, means ofregulating the capillary distribution of llquld from bristles of saidinverted brush, a cut-off knife provided with means for securing saidregulating means in adjusted position, and means for resilientlyengaging the sides of tape during the dispensing thereof adapted tofrictionally retard and guide said tape toward dispensing position withrelation to said out-

